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Soluble lymphotoxin is an important effector molecule in GVHD and GVL


Markey, KA and Burman, AC and Banovic, T and Kuns, RD and Raffelt, NC and Rowe, V and Olver, SD and Don, ALJ and Morris, ES and Pettit, AR and Wilson, YA and Robb, RJ and Randall, LM and Korner, H and Engwerda, CR and Clouston, AD and MacDonald, KPA and Hill, GR, Soluble lymphotoxin is an important effector molecule in GVHD and GVL, Blood, 115, (1) pp. 122-132. ISSN 0006-4971 (2010) [Refereed Article]

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Copyright © 2010 by The American Society of Hematology

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DOI: doi:10.1182/blood-2009-01-199927


Tumor necrosis factor (TNF) is a key cytokine in the effector phase of graftversus- host disease (GVHD) after bone marrow transplantation, and TNF inhibitors have shown efficacy in clinical and experimental GVHD. TNF signals through the TNF receptors (TNFR), which also bind soluble lymphotoxin (LT3), a TNF family member with a previously unexamined role in GVHD pathogenesis.We have used preclinical models to investigate the role of LT in GVHD.We confirm that grafts deficient in LT have an attenuated capacity to induce GVHD equal to that seen when grafts lack TNF. This is not associated with other defects in cytokine production or T-cell function, suggesting that LT3 exerts its pathogenic activity directly via TNFR signaling. We confirm that donor-derived LT is required for graft-versus-leukemia (GVL) effects, with equal impairment in leukemic clearance seen in recipients of LT- and TNFdeficient grafts. Further impairment in tumor clearance was seen using Tnf/ Lta/ donors, suggesting that these molecules play nonredundant roles in GVL. Importantly, donor TNF/LT were only required for GVL where the recipient leukemia was susceptible to apoptosis via p55 TNFR signaling. These data suggest that antagonists neutralizing both TNF and LT3 may be effective for treatment of GVHD, particularly if residual leukemia lacks the p55 TNFR.

Item Details

Item Type:Refereed Article
Research Division:Biomedical and Clinical Sciences
Research Group:Immunology
Research Field:Immunology not elsewhere classified
Objective Division:Health
Objective Group:Clinical health
Objective Field:Clinical health not elsewhere classified
UTAS Author:Korner, H (Professor Heinrich Korner)
ID Code:67846
Year Published:2010
Web of Science® Times Cited:36
Deposited By:Menzies Institute for Medical Research
Deposited On:2011-03-08
Last Modified:2022-08-23

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